Delivery-wheel trip for feeders



P. GITZENDANNER AND F. J. ALBERT.

DELIVERY WHEEL TRIP FOR FEEDERS.

APPLICATION FILED 00L 7. 1921.

1,426,980, Patented Aug. 22, 1922.

2 SHEETS-SHEET I.

v WITNESSES m/mvr A ITOR/VEVS P. GITZENDANNER AND F. J. ALBERT.

DELIVERY WHEEL TRIP FOR FEEDERS.

APPIICATION FILED 0017.1921- Patented Aug. 22, 1922.

2 SHEETS-SHEET 2.

W/T/VESSES 1=2 avliezend F Jfl Zeri ATTORNEYS a z q I: t, g g: Pg "51 a gr at 1 Y2r d va em-o i i a i t; t EAUL GI'IZENDANNER, OF WOODHAVEN, NEW YORK, AND FRANK J. ALBERT, OF

WEST NEW-YORK, NEW JERSEY.

DELIVERY-WHEEL TRIP FOR FEEDERS.

Specification of Letters Patent. Patgnted Aug, 22, 1922,

Application filed October '7, 1921. Serial "No. 506,180.

' which the following is a full, clear, and eX- act description.

This invention has relation to sheet feeders for printing presses, folding machines, or the like, and refers more specifically to a trip for the idler delivery wheels thereof. The sheet feeders now in general use are usually equipped with an automatic throwoif mechanism which functions to cut off the power when a defective feeding of a sheet occurs, but due to the momentum of the feeder mechanism,italm0st invariably hap-.

pens that several succeeding sheets are fed by the feeder mechanism, resulting in the distribution of said sheets before the feeder mechanism finally comes to rest.

As an object therefore the invention contemplates a trip for the idler delivery wheels of the feeder, which trip is actuated by the throw-off mechanism to positively prevent further feeding of the sheets by the. momentum of the feeder mechanism whereby to effect a saving of the sheets as well as to prevent undue clogging of the feeder and the time and trouble incident to the removal of the sheets which become clogged.

As a further object the invention contemplates a trip including'means for coupling the same with the automatic throw-off mechanism, which means may be shifted to permit of the return of the throw-off mechanism to normal position for operating the feeder without returning the trip to normal position, whereby .to allow the idler deliv ery wheels to function for the purpose of feeding test sheets by hand through the feeder.

I As a still further object the invention aims to produce a device'of the character and for the purpose specified, which is extremely simple in its construction and operation, and which is applicable to practically all standard types of papers which are now in use which are equipped with automatic throwofl mechanisms.

lVith the above recited and other objects in view, the invention resides in the novel construction set forth in the following specification, particularly pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein to the full extent indicated by the general meaning of the terms in which the claims'are expressed and by variations in the phraseology of the same.

In the drawings- Figure 1 is a fragmentary plan view of a feeder equipped with the idler delivery wheel trip and illustrating respectively in full and dotted lines the active and inactive positions of said trip.

Fig. 2 is a fragmentary side elevation thereof.v V

Fig. 3 is a detail perspective view of the trip.

Fig. 4 is a sectional view illustrating the improved form of pivot bolt used in connection with the trip. 1

Fig. 5 is an enlarged detail side elevation illustrating respectively in full and dotted lines the trip in its active and inactive positions.

Fig. 6 is a diagrammatic View illustrating the delivery wheel, idler delivery wheel, and means for actuating the latter.

Referring to the drawings by characters of reference, 10 designates generally a sheet feeder of any approved standard type including a drive shaft 11 upon which delivery wheels 12 are mounted for positive rotation and over which the sheets are moved by the contact of the idler delivery wheels 13 therewith. The idler delivery wheels 13 are mounted on the arms 1% secured to a rock shaft 15 which is intermittently actuated to raise and lower the idler delivery wheels 13 into contact with the delivery wheels 12 by means of a cam 16 which coacts with a roller mounted for horizontal swingingmovement on a pivot 26 adjacent the cam 16 and roller 17. One extremity of the trip arm has connected thereto by a yoke '27 a pull rod 28, the opposite extremity of which has secured thereto a coupling head 29. The coupling head is providedwith a bayonet or angular slot 30. A coupler member 31 is secured by a clip 32 to the rod of the cutj'otl meehanism and the coupler member 31 is provided with a headed pin 33 received by the bayonet slot 30. The free extremity of the trip arm is provided with an rmstanding support ing rib 34; In lieu of the usual pivot bolt for mountingthe roller 17 on the tree extremity of the arm 18, a pivot bolt 35 1s em- )10 ed '31OVlClGCl with an enlarged inte 'ral head 36 at one end which head is mounted eccentrically onthe shank of the pivot bolt tor a purpose to be hereafter described. In usea-nd operation when the throw-oil mechanism 21 exerts a pull on the rod 20 to release the switch 19 and cut off the power for driving thefeeder, a pull is simultaneouslyexerted on thepull rod 28 thereby turning the trip arm 25 to (dispose the supporting rib 8 L beneath the head 36 01 the pivot bolt as the arm 18 and idler delivery wheels 13 are raised bythe cam, thereby preventing the idler delivery wheels 13 from lowering into contact with the delivery wheels 12 to prevent further feedingi'of sheets irrespective of continued operat on "of the' teeder by inon'ient-um. By providing the coupling head 29 with a bayonet slot 30 the operator may manually engage the switchelem'ents without throwing the trip lever to inactive position whereby the idler delivery wheels 13 will remain in raised position while the operator feeds one or more test sheets through the feeder. By provid ing the pivot bolt'35 with :an eccentrically mounted head 36 it is obvious that the height at which the arm 18 will be lifted may be regulated by loosening the look nut '37 and rotating the pivot bolt.

We claim: I I p l. The combination with asheet feeder for printing presses, folding machines or the like which includes an automatic throw-oft inec'hanisnl, idler and driven delivery wheels between which; the sheets are fed when the wheels are-brought into contact with each '=other, and a mechanism for interi'irittentlydisposing said wheels in and out o'f contact,

of means operable by the automatic throw- Oil mechanism of the feeder and operatively associated with the intermittent mechanism for maintaining the delivery wheels out of contact whereby upon "operationo t the automa'tic throw-off mechanism,- said means will serve to prevent further feedingof the sheetsfthrough {the momentum of the ma chine, and a connection between said means and the automatic thro vw'o'i f"mechanism to like which include idler and driven delivery' wheels between which the sheets are fed when said wheels are brought into contact, a; mechanism for intern'iittently bringing said wheels into and out or contact and an automatic throw-off mechanism for cutting oil the power to the feeder, of means for automatically maintaining the delivery wheelsout of contact when the power is cut oil by the throw-oil mechanism to prerent further feeding by, the momentum'of the machine after said throw-oil mechanism has been actuated, comprising a trip arm adapted tovengage with the intermittent mechanism in 'one'posi'tion for holding the-delivery wheels out ofcontact, an La ctuating rod connected at one extremity to the trip arm. for moving the same, and interengagea'b'le means of connection between said rod and the automatic cut on mechanism saidmeans of connection serving to permit of the re-setting of the automatic throw-off mechanism without actuating the rod and trip arm to render the same inactive. o

3. In an" attachment for sheet feeders which include an automatic throw -'oif mechanism, a trip arm for holding the idlerdelivery wheels of the feeder in elevated p0- sition and out of contact with the driven delivery wheels, and means for throwing said trip arm to operative position com prising a connecting rod pivoted atone end to the ,rip arm and having connection at its opposite end with a movable part of the automatic throw-oil mechanism, said connection comprising a head on said trip arm having a bayonet slot, and a pin carried by the. movable part 01" the automatic throwolf mechanism arranged within said bayonet slot to permit of the resetting of the automatic throw-oil mechanism without ren dering the trip arm inactive whereby man ual feeding 0-1 the sheets for testing purposes may be permitted. 1

l; In combination, a sheet feeder for printing presses, folding machines or the like which includes an automatic cut-oil mechanism, driven delivery wheels, superposed idler delivery wheels, mechanism for intermittently effecting the lifti ng and loweri ng oii said idler wheels, which mechanism includes a shaft from which the wheels are the automatic cut-0t? mechanism "for ith row ing said trip arm to active position upon operation of the cut-off mechanism, said connection comprising a connecting rod attached to the trip arm at one extremity, a clip fastened to the automatic cut-off mechanism, a head at the opposite extremity of the connecting rod, a bayonet slot in said head and a pin extending through said bayonet slot and carried by the clip to permit of resetting of the automatic cut-off without throwing the trip lever to its inactive position.

5. In combination, a sheet feeder for printing presses, folding machines or the like which includes an automatic cut-0E mechanism, driven delivery wheels, superposed idler delivery wheels, mechanism for intermittently effecting the lifting and lowering of said idler wheels, which mechanism includes a shaft from which the wheels are supported, an arm connected to said shaft, a roller carrier by the free end of the arm, a bolt for mounting the roller on said arm having an eccentric head and a cam for actuating saidarm, and means for maintaining the idler wheels lifted comprising a trip arm movable beneath the eccentric head of the intermittent mechanism to prevent the lowering of the idler wheels, and a connection between said trip arm and the automatic cut-off mechanism for throwing said trip arm to active position upon operation of the cut-off mechanism, said eccentric head serving to permit of regulation of the height to which the idler delivery wheels will be lifted.

6. The combination with a sheet feeder of the character set forth of an attachment therefor constituting means for maintaining the idler delivery wheels lifted, comprising a headed member adapted to be attached to the intermittent mechanism, a horizontally pivoted trip arm mounted on the frame of the feeder, and a connection between the trip arm and the automatic cut-off mechanism of the feeder for actuating the trip arm upon operation of the automatic cut-off mechanism to dispose the same beneath the headed member of the intermittent mechanism as and for the purpose specified.

7 The combination with a sheet feeder of the character set forth, of an attachment therefor constituting means for maintaining the idler delivery wheels lifted, comprising a headed member adapted to be attached to the intermittent mechanism, a horizontally pivoted trip arm mounted on the frame of the feeder, a comiection between the trip arm and the automatic cut-off mechanism of the feeder for actuating the trip arm upon operation of the automatic cut-off mechanism to dispose the same beneath the headed member of the intermittent mechanism, and means for adjusting said headed member to regulate and adapt the attachment to the lift of the idler delivery wheels by the intermittent mecha nism.

8. The combination with a sheet feeder of the character set forth, of an attachment therefor constituting means for maintaining the idler delivery wheels lifted comprising a headed member adapted to be attached to the intermittent mechanism, a horizontally pivoted trip arm mounted on the frame of the feeder, a connection between the trip arm and the automatic cutoff mechanism of the feeder for actuating the trip arm upon operation of the automatic cut-off mechanism to dispose the same beneath the headed member of the intermittent mechanism, means for adjusting said headed member to regulate and adapt the attachment to the lift of the idler delivery wheels by the intermittent mechanism, and means for permitting of the resetting of the automatic throw-off mechanism to start the feeder without rendering the attachment inactive.

PAUL GITZENDANNER. FRANK J. ALBERT. 

